# Bubbles vs Let's duck

The clearest difference is update cadence: Let's duck at every 3 days against Bubbles's every 8 days. Let's duck also leads on iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Bubbles sells 2 in-app purchases, starting at $4.99 per month and Let's duck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Bubbles ships an update every 8 days, Let's duck every 3 days. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Bubbles | Let's duck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Size | 24 MB | 8 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Sunil PM](https://appshunter.io/developer/1896290467) | [trung truong](https://appshunter.io/developer/1895562173) |

## What reviewers say

### Bubbles

[App page](https://appshunter.io/ios/app/bubbles-step-tracker-pet-fish/id6766446326)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $29.99 | per year |


### Let's duck

[App page](https://appshunter.io/ios/app/lets-duck/id6767806557)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Let's Duck Unlimited | $0.99 | one-time |


## Frequently asked questions

### Is Bubbles free?

Bubbles is free to download, with in-app purchases available.

### Is Let's duck free?

Let's duck is free to download, with in-app purchases available.

### Do Bubbles or Let's duck have ads?

Neither Bubbles nor Let's duck shows ads.

### Which is updated more often, Bubbles or Let's duck?

Bubbles ships an update every 8 days, and Let's duck every 3 days. Most recently, Bubbles was updated on September 8, 2026 and Let's duck on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*